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(No Model.) 2 Sheetsheet I. G. A. D'RAP-ER 82; A. E. RHOADES. MACHINE FOR TWISTING 0R DOUBLING YARN. No. 503,905.

Patented Aug. 22, 1893,.

2062570938 as m M amid/4 (NO Model.)

jrovan/tqrb 2 Sheets-Sheet 2. G. A. DRAPER & A';-E.,RHOADES. MACHINE FOR TWISTING OR DOUBLING YARN- No. 503,905.

a m, e. a m wwn 4 n Patented Aug 22,1893.

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08W azi 01z wm mm 5 9 W UNITED STATES PATENT OFFICE.

GEORGE A. DRAPER AND ALONZO E. RHOADES, OF HOPEDALE, MASSACHU- SETTS, ASSIGNORS TO THE HOPE PLACE.

DALE MACHINE COMPANY, OF SAME MACHINE FOR TWISTING OR DOUBLING YARN.

SPECIFICATION forming part of Letters Patent No. 503,905, dated August 22, 1893.

Application filed May 28, 1891. Serial No. 394,407- (No model.)

To all whom it may concern:

Be it known that we, GEORGE A. DRAPER and ALONZO E. RHoADEs, both of Hopedale, county of Worcester, State of Massachusetts,

5 have invented an Improvement in Machines for Twisting or Doubling Yarn, &c., of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

In machines for twisting and doubling yarn or thread as said machines are now commonly constructed, whenever a yarn or thread breaks the end so formed winds about one of the r usual front rolls and the yarn or thread is thereby pulled from its source of supply and wasted. To prevent this waste of valuable yarn or thread whenever the same is broken, we have devised means which will be hereinafter described.

Our improved machine contains a series of top rolls, one for each series of yarns or threads being twisted together. The journals of these top rolls are mounted upon inclined tracks or supports, the yarns being twisted acting on the said rolls to keep their journals at the upper ends of the said tracks except when one or more yarns or threads break, at which time the journals of the said top roll roll down said inclined tracks and in so doing carry with them the yarn or thread, and in the movement of the top roll as described, it is sufficiently removed from contact with the bottom roll to prevent further feed of the 3 5 yarn or thread by and between the top and the bottom roll. The tracks referred to are mounted upon rods or feet vertically adjustable in or with relation to arms, in turn preferably made adjustable upon a rock-shaft to be described, so that by turning the latter all the top rolls, which, during the operation of the machine in twisting, normally stand at one side of the longitudinal center of the bottom roll, may be moved so that their centers will be at the other side of the longitudinal center of the bottom roll. The top roll track is moved in this manner whenever the machine is to be stopped and left inactive, and

at such time the threads will be properly held so as to avoid any slack twist.

Our invention, among other things, consists in a twisting frame containing the following instrumentalities, viz:a bottom roll; a series of top rolls; a track to support the said top rolls normally at one side of the longitudinal 5 5 center of the bottom roll to enable the top roll to move away from the bottom roll when the yarn breaks; and means to move the said track to place the top rolls at the opposite side of the longitudinal center of the bottom roll when the machine is stopped, the said top rolls in such position continuing to nip the yarn between them and the bottom roll, substantially as will be described.

Figure 1 shows in' section a sufficient portion of a twisting frame to enable our invention to be understood; Fig. 2, a partial top or plan View of the machine shown in Fig. 1, the spools supplying the yarns or threads to be twisted being omitted, as well as the spindles. Fig. 3 is a partial right hand end view of the parts shown in Fig. 2; Fig. 4,a diagram showing diiferent positions of the top roll with relation to the bottom roll, and Fig. 5 shows a modification of our invention.

The frame-Work A, having the top plate A the sleeve whirl-spindle B, the spindle-support B, the spindle rail B the ring-rail 0, having rings 0 provided with travelers t, the bobbin C the guide-board D having usual eyes, the drumshaft D having the drum D driving the bands D for rotating the spindles, the toothed gear D for engaging and rotating the smaller toothed gear D connected with the lower front roll E, and the studs E for supporting the spools E containing the threads 2 and 3 to be twisted or doubled, are and may be all as usual in twisting frames. The bottom roll has its journals supported in the usual roller stands w, the said stands also having suitable bearings for a rock-shaft I) having arms I) attached thereto by suitable set-screws 6 These arms are represented as hollow to receive posts 12 which may be adjusted vertically in the arms and may be secured in adjusted position by suitable setscrews b. The posts support, at their upper ends, the tracks 0 in such position that normally the tracks incline a little downwardly toward the shoulder 0' thereof. By adjusting bobbin;

5 being twist ChWith its journals-or centers at one side of the longitudinal center or axis of the bottomioll. v I p p In this instance of our invention it is supposed that the frame is adapted for twisting threads or strands when wet, and the trough a, containing water or othermoisteniiigfluid,i

has in it a glassguide-rod a under which the threads or strands 2, 3, pass, the trough nearits front portion having-a series of glass guides a over which the yarns are conducted, thence, p as shown in Fig. 1, over the front roll, down injzront of and under and between said top roll and thebott om ton, thence to the iisual giiide-eye n, to the trayeler t,.an"d upon the" bobbin. In Fig. 1, should one or both tl1' 1".'tdls break, the top roll e, co-operatiiig with the ottom ten to feed the said threads,- wil-lf ten to the l eft and carry the" broken end's'w'ilt'hit, so that the feeding of the yarns-orthfeads between the top roll and the bottom roll will be arrested and the bi'oken. ends will not jbe wo ind' about the rolls orbe caught'by other adjacent traveling threads. p

Ereo'ted upon the: table or head a 'is tested see Fig. 3, having at its uppef end a houl:

der or projection which is engaged by a pawl o pivoted at o eh the hand 1ever 0 attached to the roc'k-shaftb, the said pawl, when ifiem gagein'entwith the said projection, 'as retiresented in Figs. 2 am 3, keeping the series (if top foils in operative position, asiepreseitted When the epet'tht desires to stopthef e the, he'will enga e t e handle'ari din he doing turn the pat o, it having" ret twttthiy ez'it'e'nd'ed arm Q4, releasing the said pawl from; the said projection, when, by a; movement er thehandle iti the direction of the arrow, Fi'g; a 3, the toproll niay be carried to the otheiside f of the longitudinal center of the bot'torir roll,

cite the right viewing said figure: When this is d'one, th'e top i'oll assumes thepos'i'tionj reptesehtee by the dotted circle 3", FigL-tand the yam-s 2, 3 coining eves the'fn; beihgire liet'ed fronit'he traveler strain, the said tep ij'o'll will continue to nip the twisted yfar'n be tween itself and the bottomroll, and'in this position the top roll oahnot roll ohthe said heck sway tr e-th thehettem roll, and as a resultjof this" continued nipping, the 'y'afneahnot hee'eihe slackup'on' thetop roll and be'dis When, howeirei the" 'yhtn placed thereon. breaks, the IQll goes into the dotted line p0 siti'on 4, Fig. 4,

- In the modifi'atiomFig. 5,the construction,

is the same as in'Fig. 1, with the ex eptieh' that the yarns or threads to betw'is'ted are first led Hilde! the bottom fIOI'It roll, thenc betweenit and the top roll, over the't'oprol'l gu de-eye n,

and down in front of the safne, through. the" Inthe modified form ofa'ppaiatus, the norifial position of the top roll is opposite that shown in Fig. 1, and when the yarn breaks between the top roll and traveler, the saidroll will roll down the track as before, but in this instance, back from .i'tsivorking'. position,and irr'so doing will keep the broken' end from being acted upon to draw the thread or yarn from the spindle or delivery source. But in the plan'shown in Fig. 5, when the rock-shaft I b is turned to carry th'etop roll to the front from the position therein shown when the inachine is to be left at rest,the doubled yarn or thread slacks-and changes its position somewhat owing to the twist, and owing to this change, the yarn is liable to become so slack as to slip off the ends of tho narrowjtop roll, and to revent this-escape; of the twisted yarn fr'om' the; said top roll, wa'have protidied each with an'anri-iilar greeVenear each foll maybe oinitted; as they whines-he necessary.

j In Fig. 1 the tracks" dear the shoulder a i ste pieviaed with notch-es e 9, in w '11 may P be set-the joninails' of theteprel it is desiretito piece up" the jaiiis aii-d keep Q the; top i'bl'ls frdiil cbflfadtWitltfhe b'tfibnl l roll.

I It" will be hetieea in the forr'iiof oiir'int'en- I t-ion rep-tee ntedin Figstl aiid lthat th' for" the journals" of thetop" roll is s inclined that the top roll, when releasedhi the breakege t a ya'rh of thread, win reli down the t ee]; toward the spindle-aha the periphery at the tep roll willtellaway tteththepeti h fei'yot thebottoin roll eha-e'te'pthe feeding of the 5 am o1 th-i'e'ad;

W claim; Q h h 1 A twisting ffa r'rie eh Ii-ih'g' the follow- 1mg irisftrinireritalities; viz'z a bottom roll; a i series of top' tens; attach to shfspert the said tep "rolls hemny atone side et thelong'itudinal center of the bottom roll toe'hiable the top roll to iiioveawaj ffoin thebottoiii roll when i the yet-nbr aks;- an means to mote the said track to place the top rollsat tfhe opposite "side et the longitiidiiial center of the bottom roll wheiithe machine is stopped, the'said top re-11s in such position continuifigto nip the yath between theni aha-the bottom-i011, substeht euy as described. 7

2. In a twisting frame, a bottom roll; a series of top rolls; e series of tfacks upon which i the journals of the said top-rollsrhey travel,

coinbiiied with a rook-shaft tot supportin the 'said tracks, substantially described.

3, The rock-shaft 12 having theadjnstable aims, and tracks ni'oired injunison with the said afnis', combined with a-bottoin front roll, and with a top rollhavingits-joiirn-al's mountthrough the traveler, add to the ed tettevei onthe said tre'ek, substaifilfially as described. 7

end-as fepresented best in Fig.-2. When,

4. In a twisting frame, a rotating bottom front roll; a top roll; an inclined track upon which the journals of the said roll may travel, combined with a swinging support for the said track, and with means to swing the said support to positively carry the top rolls out of tracks being movable about acommon center, combined with a pawl or locking device to retain the tracks in position to maintain the journals of the top rolls substantially in vertical line with the center of the bottom roll, the release of the locking device permitting the tracks to be swung in a direction to remove the journals of the top rolls out of vertical line with the center of the bottom roll, as and for the purpose set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

GEO. A. DRAPER. ALONZO E. RHOADES. Witnesses:

FRANK J. DUTCHER, C. E. LONGFELLOW. 

